Loom picker



J. E. MOE

LooM PICKER y March 9, 1943.

INVENTOR.

lffrrzuwwsy Pfg@ `Jew/v EDGAR MOE Filed 001:. 2, 1941 Patented Mar. 9,1943 UNITED STATES PATENT OFFICE Gates Rubber Compa poration ot Coloradony, Denver, Colo., a cor- Applicatlon October 2, 1941, Serial No. 413,252 2 Claims. (01. 139-159 This invention relates to improvements in loompickers and has reference more particularly to a loom picker madeprincipally from rubber-impregnated fabric and reenforced to resistdisruptive strains.

In every loom the shuttle is reciprocated through the shed, formed bythe warp, by mechanical means comprising picker sticks, one of which ispositioned on each side of the loom. The picker sticks areinterconnected and oscillated by cam mechanisms that give them theproper movement for projecting the shuttle.` Secured to the pickersticks are removable loom pickers so positioned that they receive theend of the shuttle and bring the same to a stop and also impart to itthe necessary momentum for the return passage. The continued impact ofthe shuttles with the loom pickers has a tendency to break them down andconsiderable difficulty has been experienced in properly designing loompickers that will resist the disruptive action of the shuttles with theresult that the loom pickers are shortlived.

It is the object of this invention to produce a loom picker that dii'ersfrom similar loom pickers principally in thisl that it is so constructedand reenforced, by means of metal or other reenforcing members that thedisruptive strains are more successfully resisted.

Another object of this invention is to produce a picker having theshuttle engaging end of greater density than the remainder of the pickerbody.

It is well understood that when a vessel such as a cylinder is subjectedto internal pressure, it will tend to assume a. circular cross sectionas this g'ves the greatest area per unit periphery.

In the present invention the loom pic-ker has been so designed that theshuttle engaging end is made cylindrical and is reenforced by acylindrical reenforcing member, and therefore any strains tending torupture the picker will be uniformly resisted by the circular orcylindrical reenforcing member.

In order to more clearly describe the invention, reference will now behad to the accompanying drawing in which a picker constructed inaccordance therewith has been illustrated, and in which:

Figure l is a side elevation of the improved picker;

Figure 2 is a sect-ion taken on line 2-2, Figure 1;

Figure 3 is a section taken on line 3-3,-Fig ure 2;

Figure 4 is a section cross sectional View through the entire width andheight of the plug, taken on line 4-4, Figure 3;

Figure 5 is a side elevation of a slightly modied form;

Figure 6 is an end elevation looking in the direction of arrow 6, inFigure 5; and

Figure '7 is a cross section similar to that shown in Figure 4, butshowing a slightly modified form of construction.

The loom picker illustrated is formed principally from rubberized fabricand is provided with an openingl I 0 of the proper size and shape toreceive the picker stick which has been shown by dot and dash lines inFigure 1 and which is designated by reference numeral I I.

In the embodiment shown, the wall of the picker stick opening is formedby a plurality of layers I2 of rubberized fabric which are wrappedaround a core forming the opening. Positioned in front of the fabriclayers I 2 is a core I3 formed from a plurality of4 layers of rubberizedfabric. The core I3 is secured to the layers I2 by means of a pluralityof rubberized fabric layers I4 that are wrappedlongitudinally andentirely enclose the core and the fabric layers I2. After the body oithe loom picker has been built upV in this manner, it is placed in amould and subjected to pressure whereby the front end is provided with adepression I5 which serves to receive the end of the shuttle. In theembodiment'illustrated opening I5 has been shown circular, but

it may be elongated in a vertical direction as shown in United StatesPatent No. 2,259,413. The mould is so constructed that the front end ofthe loom picker is compressed thereby and made y cylindrical to thepoint designated by reference numeral I6 in Figure 1. When the crosssection is decreased the material is naturally compressed and increasedin density. A cylindrical metal sleeve II is applied to the cylindricalportion immediately after its removal from the mould and serves as areenforcing ferrule. The cylindrical metal reenforcing member can bemade or the `desired strength to resist the disruptive forces producedby the shuttle. Instead of a metal sleeve I'I, the cylindrical end ofthe picker can be wrapped with wire or with cord in the manner"indicated by reference numeral I8 in Figures 5 and 6. In the embodimentillustrated in Figures 1 to 6 the core is formed from a plurality oflayers of rubberized fabric extending transversely in a verticaldirection. The

reason `for making the core in this manner is to facilitate themanufacture. It is possible, however, to employ a spirally wound coreformed from a roll of rubberized fabric as shown in Figure '7 anddesignated by reference numeral I1. The spiral core will still furtheradd to the strengthof the picker but will also increase the diiculty andexpense of manufacturing the same.

From the above description it will be apparent that a loom pickerconstructed as shown and described will be highly resistant todisruptive strains. The high density of thecompressed material at theshuttle engaging end and the circular reenforcement produces a pickerthat will ontlast isimilar pickers of ordinary construction. Sincerubber composition of the kind employed in the picker tends to return toits original form after compression, to a limited extent, but quiteslowly, the material will engage the surrounding. reenforcing memberswith considerable force whereby the material will be retained underconsiderable compressive strains at all times.

Having described the invention what is claimed a's new is:

l. A loom picker comprising a body of resillent rubber containingmaterial and of normally rectangular cross section in a planeperpendicular to its longitudinal axis, the body having an opening nearone end for the reception of a picker stick, the other end having arecess for the reception of a. shuttle end, the end having the recessbeing changed in shape by compression from one of rectangular to asubstantially circular cross section in planes at right angle to theaxis of the picker, and means for maintaining the cylindrical end ofconstant cross sectional area during operation, comprising asubstantially inextensible band surrounding the cylindrical portion inclose engagement therewith.

2. A loom picker comprising a body composed principally of rubberimpregnated fabric, the body having an opening near one end for thereception of a picker stick, the other end of the body having a. recessfor the reception of a shuttle end, the body being normally ofrectangular cross section in planes perpendicular to its longitudinalaxis, that end of the body containing the recess being changed in shapefrom one of rectangular to one of circular cross section in planesperpendicular to the axis of the body, and a cylindrical metal ferrulesurrounding the portion of circular cross section and positioned inclose contact with the surface thereof for maintaining the crosssectional area constant during operation. l

JOHN EDGAR MOE.

